Snow thrower impeller

An impeller for a snow moving apparatus, comprising:

• a back plate having a substantially circular shape defining an outer circumference and having a mounting opening near a center of the back plate that is aligned with an axis of rotation of the impeller, the back plate defining a first surface that is substantially flat and extending radially from the mounting opening to the outer circumference, and defining a second surface;
• a hub formed about the mounting opening and extending outward from the first surface in a direction substantially perpendicular to the first surface of the back plate;
• a plurality of impeller blades extending from the hub toward the outer circumference on the first surface of the back plate and secured to the back plate to fixedly rotate together with the back plate about the axis of rotation in response to a rotational force applied to the impeller perpendicular to the axis of rotation, wherein the plurality of impeller blades comprises four or more impeller blades;
• and
• a wiper positioned adjacent to an impeller blade of the plurality of impeller blades and comprising a wiper portion that secures within a mounting slot at least in part defined by the impeller blade or the first surface of the back plate, wherein the wiper is movable a predefined distance within the mounting slot from a rearward extent to a forward extent, wherein at the forward extent an edge of the wiper extends in part beyond the outer circumference of the back plate.

An impeller for a snow moving apparatus, comprising:

• a back plate defining an outer circumference and an opening about an axis of rotation of the impeller, the back plate defining a first face, and defining a second face on an opposite side of the impeller from the first face;
• a hub formed about the opening and extending outward from the back plate in a direction substantially perpendicular to the axis of rotation a distance equal to a length of the hub;
• a plurality of impeller blades secured to the first face of the back plate and extending along the first face from respective first ends near the hub toward the outer circumference, wherein an impeller blade of the plurality of impeller blades comprises a surface defining a top edge and an outer edge, the outer edge extends from the first face of the back plate away from the back plate to the top edge, wherein the top edge has a distance from the back plate that defines a maximum height of the surface, and wherein the maximum height of the surface is greater than the length of the hub;
• and
• a wiper movably secured adjacent to the surface of the impeller blade so as to extend linearly a predefined distance radially outward along the surface toward the outer circumference of the back plate and radially inward along the surface away from the outer circumference.

A snow thrower impeller assembly, comprising:

• a back plate defining a circular surface that is substantially flat and having an opening about an axis of rotation of the snow thrower impeller assembly;
• a hub positioned about the opening defining an interior portion and extending a length along the axis of rotation from the circular surface;
• a plurality of blades that respectively extend substantially radially outward from the hub to an outer circumference of the back plate, wherein a blade of the plurality of blades is curved or angled in a direction of rotation of the snow thrower impeller assembly as the blade extends from the hub to the outer circumference, and further wherein the blade has a height defined as a maximum distance from the circular surface of the back plate that is greater than the length of the hub portion;
• and
• a wiper adjacent to a front or rear surface of the blade and having a first end that extends at least to the outer circumference of the back plate.